Security auditor, personas, orchestration, docs catalog & roadmap (#35)

Closes the remaining gaps vs alirezarezvani/claude-skills across trust, content
types, discoverability, and community.

Security (trust signal + useful):
- scripts/skill-audit.mjs scans skills/*/SKILL.md + each skill's scripts/ for
  prompt injection, exfiltration, dynamic code exec, destructive shell, secrets,
  and hidden text. HIGH fails CI (.github/workflows/skill-audit.yml) + a badge.
- New skill-security-auditor skill teaches the same review (production tier).

Content types:
- output-styles/ — 4 personas (Startup CTO, Growth Marketer, Solo Founder,
  Product Leader) as Claude Code output styles; --agent claude installs them too.
- ORCHESTRATION.md — Skill Chain / Multi-Agent Handoff / Domain Deep-Dive /
  Solo Sprint patterns.

Discoverability:
- scripts/build-docs.mjs generates a server-rendered, SEO-indexable
  web/catalog.html of all skills (built in the Pages deploy; gitignored).
  Linked from README + playground.

Community:
- ROADMAP.md (now/next/later + good-first-issues).

README badges/sections, TIERS (47 production), CHANGELOG, package.json files,
and exports/web index all updated. SkillCheck + security audit + exports verified.


Claude-Session: https://claude.ai/code/session_016JWn5jRD5tcEFKrubjQ6Px

Co-authored-by: Claude <noreply@anthropic.com>

web/index.html

@@ -34,6 +34,7 @@
   <div class="key-note">
     🔒 Your key is stored only in this browser and sent directly to api.anthropic.com — never to us.
     Get one at <a href="https://console.anthropic.com/settings/keys" target="_blank" rel="noopener">console.anthropic.com</a>.
+    · 📚 <a href="catalog.html">Browse the full skill catalog</a>
   </div>
 
   <div class="controls" id="controls">